Ge1-x Sn x nanodots crystal nuclei for solid phase crystallization of poly-Si1-x-y Ge x Sn y

被引：0
|
作者：
Shirai, Yusei [1 ]
Tatsuoka, Hirokazu [1 ]
Shimura, Yosuke [1 ,2 ,3 ]
机构：
[1] Shizuoka Univ, Grad Sch Integrated Sci & Technol, 3-5-1 Johoku,Naka Ku, Hamamatsu, Shizuoka 4328018, Japan
[2] Res Inst Elect, 3-5-1 Johoku,Naka Ku, Hamamatsu, Shizuoka 4328651, Japan
[3] Imec, Kapeldreef 75, B-3001 Leuven, Belgium
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2023年 / 62卷 / SC期
关键词：
nanodots; GeSn; SiGeSn; thermoelectric material; group-IV materials;
D O I：
10.35848/1347-4065/aca20e
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Solid phase crystallization of polycrystalline Si1-x-y Ge (x) Sn (y) using Ge1-x Sn (x) nanodots (Ge1-x Sn (x) -ND) as crystal nuclei was examined. The effects of the substrate temperature and the ratio of the deposited Ge and Sn on the dot size, the coverage, and the substitutional Sn content in the Ge1-x Sn (x) -ND were investigated. Lowering the deposition temperature increased the coverage and the substitutional Sn content of the Ge1-x Sn (x) -ND. Crystallization of Si deposited on the Ge1-x Sn (x) -ND was confirmed at the deposition temperature of 150 degrees C. The Si content was higher when Si was deposited on nanodots with higher coverage, and the Si and Sn contents in the poly-Si1-x-y Ge (x) Sn (y) layer were estimated to be as high as 36.3% and 4.2%, respectively, after annealing at 225 degrees C for 30 min.
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页数：5
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